Metric Metric MeasurementMeasurement

Types of Metric Types of Metric MeasurementMeasurement

LengthLengthMassMassVolume Volume TemperatureTemperatureDensityDensityTimeTime

LengthLengthDistance between 2 Distance between 2

pointspoints

Basic Unit: meter (m)Basic Unit: meter (m)Equipment: meter sticks, Equipment: meter sticks,

metric rulersmetric rulers

MassMassAmount of matter in an objectAmount of matter in an object

Basic Unit: gram (g)Basic Unit: gram (g)Equipment: Triple Beam BalanceEquipment: Triple Beam Balance

** Weight is different than mass! ** Weight is different than mass! Weight is mass x force of gravity. Weight is mass x force of gravity. Mass is constant. Weight can change.Mass is constant. Weight can change.

VolumeVolume

Amount of space Amount of space something takes something takes up.up.

Volume of liquidsVolume of liquidsBasic Unit: liter (l)Basic Unit: liter (l)Equipment: graduate cylinderEquipment: graduate cylinder

*Always read a graduate *Always read a graduate cylinder at eye level.cylinder at eye level.

MeniscusMeniscus- curved upper surface - curved upper surface of a column of liquid.of a column of liquid.

Volume of Liquids-cont.Volume of Liquids-cont.

Read the volume Read the volume using all certain digits using all certain digits and one uncertain and one uncertain digit. digit.

Certain digits Certain digits determined from determined from marks on cylindermarks on cylinder

Uncertain digit is Uncertain digit is estimated.estimated.

Volume: 6.62 ml

Volume: 52.7 mlVolume: 11.5 ml

Volume of SolidsVolume of SolidsBasic Unit: cmBasic Unit: cm33

Equation: Equation: V = L x W x HV = L x W x H

Example:Example:

V= V= 3cm x 3cm x 3cm3cm x 3cm x 3cm

3 cm 3 cm

3 cm

Volume of Irregular Volume of Irregular SolidsSolids

You will use a graduate You will use a graduate cylinder by water cylinder by water displacement.displacement.

TemperatureTemperatureThe measure of how hot or cold The measure of how hot or cold

something is.something is.Basic Unit: Kelvin (K)Basic Unit: Kelvin (K)Equipment: ThermometerEquipment: Thermometer

Most scientists use Most scientists use Celsius (CCelsius (C°°))

DensityDensityCloseness of particles(how Closeness of particles(how

spread apart they are)spread apart they are)Mass per unit volume of an Mass per unit volume of an

objectobjectBasic Unit: grams per cm Basic Unit: grams per cm

cubed (g/cmcubed (g/cm33))Equation: D = M / VEquation: D = M / V

TimeTimeInterval between 2 events.Interval between 2 events.

Basic Unit: Seconds (sec)Basic Unit: Seconds (sec)Equipment: Clock or Equipment: Clock or

stopwatchstopwatch

Metric ConversionsMetric ConversionsKilo1000

Hecto100

Deka10

Base Unit1

Centi0.01

Deci0.1

Milli0.001

K

H

Dk

g , l, m

d

c

m

Going down: Move the decimal point right for every step you take.

Going Up: Move the decimal point left for every step you take.

Metric ConversionsMetric ConversionsKilo

Hecto

Deka

Base Unit

Centi

Deci

Milli

K

H

Dk

g ,l, m

d

c

m

Going down: Move the decimal point right for every step you take.

Going Up: Move the decimal point left for every step you take.

Converting Metric UnitsConverting Metric Units

Practice Problem 1:Practice Problem 1:

1000 mg=______g1000 mg=______g

Practice Problem 2:Practice Problem 2:

160 cm=_______ mm160 cm=_______ mm

Practice Problem 3:Practice Problem 3:

109 g=________kg109 g=________kg

Converting Metric UnitsConverting Metric UnitsCompare using >, <, or =.Compare using >, <, or =.

Problem 4:Problem 4:

56 cm 56 cm 6 m 6 m

Problem 5:Problem 5:

7 g 7 g 698 mg 698 mg

Metric Conversion: AnswersMetric Conversion: AnswersProblem 1:Problem 1: 1 g1 g

Problem 2: 1,600 mmProblem 2: 1,600 mm

Problem 3: Problem 3: ..109 kg109 kg

Problem 4: <Problem 4: <

Problem 5: >Problem 5: >

Conversion Practice ProblemsConversion Practice Problems1)1) 27 Dkm = ______________ cm27 Dkm = ______________ cm

2)2) 2, 437 cm = ______________ km2, 437 cm = ______________ km

3)3) 14 kg = __________________cg14 kg = __________________cg

Fri. Practice ProblemsFri. Practice Problems1)1) 65 dg = ______________Dkg65 dg = ______________Dkg

2)2) 100,000 mm = _______________ km100,000 mm = _______________ km

3)3) Find the volume of this object.Find the volume of this object.(Each small block is 1 cm long)(Each small block is 1 cm long)

Practice Problems AnswersPractice Problems Answers

1)1) 0.65 Dg0.65 Dg

2) 0.1 km2) 0.1 km

3. 27 cm3. 27 cm33

Scientific NotationScientific NotationA shorter way to write A shorter way to write

very large & small very large & small numbers.numbers.

Example:Example:

300,000,000 m/s300,000,000 m/s

(speed of light)(speed of light)

= 3.0 * 10= 3.0 * 1088

CoefficientCoefficient ExponentExponent

To write a number in scientific notation:1. Put the decimal after the first digit and drop the zeroes

2. Count the number of places from the decimal to the end of the number.

Example 1:Example 1:

123,000,000,000123,000,000,000

Coefficient = 1.23Coefficient = 1.23

In 123,000,000,000 there In 123,000,000,000 there are 11 places. are 11 places.

Exponent = 11 Exponent = 11

Answer Answer ::

1.23 * 101.23 * 1011 11

Example 2:Example 2:

0.000001 s 0.000001 s

Coefficient= 1.0Coefficient= 1.0

In 0.000001 there are 6 In 0.000001 there are 6 places.places.

Exponent: 6Exponent: 6

Answer:Answer:

1.0 * 101.0 * 10-6 -6 ss

Scientific NotationScientific NotationPractice Problem 1:Practice Problem 1:

1,000 000 km1,000 000 km

= 1.0 * 10= 1.0 * 106 6 kmkm

Practice Problem 2:Practice Problem 2:

5, 600, 000, 000, 000, 000, 000, 000 m/s5, 600, 000, 000, 000, 000, 000, 000 m/s

= 5.6 *10= 5.6 *102121 m/s m/s

Practice Problem 3: Practice Problem 3:

.311 000 000 000 000 L.311 000 000 000 000 L

= 3.11 * 10= 3.11 * 101414 L L